LLVM_INSTALL_DIR=/home/vagrant/proj/llvm-project-rustc-10.0-2020-05-05/build
export PATH=${LLVM_INSTALL_DIR}/bin:$PATH
export LLVM_DIR=${LLVM_INSTALL_DIR}/lib/cmake
export CMAKE_PREFIX_PATH=${LLVM_INSTALL_DIR}/lib/cmake
export LD_LIBRARY_PATH=${LLVM_INSTALL_DIR}/lib:$LD_LIBRARY_PATH